Spanish Title:Don, Doña
You will find these courtesy titles almost paired to “Sir” and “Lady”, although you can still find ‘Señor Don” and ‘Señora Doña’ used in Spain… which falls short of queen itself. You will see it used in most written invitations.
You will also find a college degree used instead of “señor” [Mr.] or “señora” [Lady] as in ‘doctor’ [doctor] or ‘ingeniero´[engineer]. If you don’t know whether somebody has a degree or not, be on the safe side and use “Don” freely, as it works both in formal and important occasions.
Example:Sra. Doña Fe Roa Paz
Translation:Madam Fe Roa Paz